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nozzle melting

10-04-2013, 12:51 PM

we are having a problem at work with one of our millers melting nozzles we have several of the same feeders we are melting the nozzles just after a couple passes can someone please help with with trying to figure this out

Comment

I have had this problem a few times using a xmt 350 with a 8 rc feeder. two or three times it was someone messing with my programs. But one time It was the feeder. board went bad and called for max heat intermittently. One other time I had a short in the 14 pin cable causing wide open voltage. melting the tip half way back in the barrel.
I suggest hooking up the feeder to a different rectifier. and see what happens. if the feeder does the same thing. change the control cable.

Comment

Since you say you are running the same feeders on a few machines, then try swapping the whip that is burning nozzles with another whip on a good machine. I've had this problem before when the ceramic core in the whip got damaged and wouldn't pull the heat from the nozzle. By switching whips you will know if that is the culprit.